BJohnny Smith was a good maths student at a high school． He loved his computer．He came home early every day， then he worked with it till midnight． But Johnny was not a good English student， not good at all． He got an F in his English class． One day after

题目

B

Johnny Smith was a good maths student at a high school． He loved his computer．He came home early every day， then he worked with it till midnight． But Johnny was not a good English student， not good at all． He got an F in his English class． One day after school， John’ ny joined lus computer to the computer in his high school office． The school office computer ．had the grades of all the students: the maths grades， the science grades， the grades in arts and music， and the grades in English． He found his English grade． An F! Johnny changed his Eng’lish grade from F to AJohnny's parents looked at his report card． They were very happy． '"An A in English! said Johnny's Dad， "You're a very clever boy， Johnny．Johnny is a hacker（黑客）． Hackers know how to take information(信息) from other computers and put new information in． Using a modem(调制解调器) ， they join their computers to other computer secretly． School headmasters and teachers are worried about hackers， so are police， for some people even take money from bank computer account(帐户 ) and put it into their own ones． And they never have to leave home to do it! They are called hackers．

( )26． Johnny changed his English grade with the computer in ________

A． the classroom

B． the school office

C． a bank near his house

D． his own house

相似考题

1.设有关系模式：student(sno, sname, age, dept)，现利用命令： CREATE VIEW stu AS SELECT *FROM student WHERE dept="cs"WITH CHECK OPTION 创建了一个视图。则以下SQl命令中能正确执行的是A．UPDATE stu SET dept="maths"B．UPDATE stu SET dept="maths"WHERE age＞=20C．INSERT INTO stu VALUES ("2004001", "John", 30, "cs")D．INSERT INTO stu VALUES ("2004001", "John", 50, "maths")

2.Jack() to see me.He'll be here soon.A.comeB.is comingC.came

3.设有关系模式：student (sno，sname，age，dept)，现利用命令： CREATE VIEW stu AS SELECT*FROM student WHERE dept="cs"WITH CHECK OPTION 创建了一个视图。则以下SQL命令中能正确执行的是( )。A．UPDATE stu SET dept="maths"B．UPDATE stu SET dept="maths" WHERE age＞=20C．INSERT INTO stu VALUES("2004001","John",30,"cs")D．INSERT INTO stu VALUES("2004001","John",50,"maths")

4.I must have thrown away ( ) by mistake.A、his’B、hisC、he’sD、he

参考答案和解析
正确答案：D
26.D【解析】黑客只需通过自己的计算机就能进入别人的计算机，故选D．
更多“BJohnny Smith was a good maths student at a high school. He loved his computer.He came hom ”相关问题

  • 第1题：

    设有关系模式：student(sno，same，age，dept)，现利用命令：CREATE VIEWStu ASSELECT*FROMStudent WHERE dept=“cs”WITHCHECK OPTION创建一个视图。则以下SQL命令中能正确执行的是

    A． UPDATEStuSET dept=“maths”

    B．UPDATEStuSET dept=“maths”WHEREage>=20

    C．INSERT INTOStu VALUES(“2004001”，“John”，30，“cs”)

    D．INSERT INTOStu VALUES(“2004001”，“John”，50，“maths”)


    正确答案：C
    解析：SQL语言用CREATEVIEW命令创建视图，其格式为：CREATEVIEW<视图名>[(<列名>[，<目标表达式>]…)]AS<子查询>[WITHCHECKOPTION]；修改视图包括插入(INSERT)、删除(DELETE)和更新(UPDATE)，由于视图是虚表，因此对视图的修改，最终要转换为对基本表的修改。

  • 第2题：

    When the teacher gives feedback to students in teaching writing, he/she should NOT__________.

    A．make positive comments on the good features of the writing
    B．give words simply like "good" or "very good" to the writing
    C．point out areas for improvement
    D．express his/her personal opinion on the issue the writer has discussed

    答案：B
    解析：
    考查教学反馈。教师给予学生反馈时，不能仅仅写个简单的评语“好”，这对于学生写作技能的提高没有任何帮助：而应该指出哪里写得好，哪里有待改进，并针对学生在作文中发表的观点给出自己的意见。故选B。

  • 第3题：

    The working parent is not willing to listen to her (his) four-year-old child talking about hissandbox games because she (he) is___________.

    A.boring
    B.very tired
    C.busy
    D.angry

    答案：B
    解析：
    通读第四段，注意短语“fartoo beaten down”，可知父母每天工作非常辛苦和疲惫。所以和孩子的交流沟通少了。正确答案为B。A、C、D都不符合题意。

  • 第4题：

    设有关系模式：student(sno，sname，age，dept)，现利用命令： CREATE VIEW stu AS SELECT * FROM student WHERE dept="cs"WITH CHECK OPTION创建了一个视图。则以下SQL命令中能正确执行的是( )。

    A．UPDATE stu SET dept="maths"

    B．UPDATE stu SET dept="maths"WHERE age＞=20

    C．INSERT INTO stu VALUES("2004001"，"John"，30，"CS")

    D．INSERT INTO stu VALUES("200400l","John"，50，"maths")


    正确答案：C

  • 第5题：

    When the teacher attempts to elicit more information from the students by saying "And...","Good. Anything else", etc, he/she is playing the role of a __________.


    A.prompter

    B.participant

    C.manager

    D.consultant

    答案：A
    解析：
    考查课堂教师角色。题干的意思是当老师试图从学生那里得到更多信息时．他通过一些话语来引导，他扮演的角色是什么。当学生发言或回答问题过于简略时．教师可用“And…”“Good．Anythingelse”等提示学生继续往下说，这时教师扮演的课堂角色是提示者。A项是提示者，B项是参与者．C项是管理者．D项是咨询者。根据题干意思，可锁定答案为A。

  • 第6题：

    Everyone said he was a decent sort of guy.

    A:honest
    B: rich
    C:good-looking
    D:high-ranking

    答案：A
    解析：
    句意：人人都说他是个诚实的人。单词honest意为“诚实的”;rich意为“富裕的”;good-looking意为“好看的”; high-ranking意为“职位高的”；单词decent意为“正派的，得体的，诚实的”，和honest的意思接近。

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